Psalm 73:13

I have cleansed my heart in vain, and washed my hands in innocence.

Job 34:9

He has said: 'It profits one nothing to take delight in God.'

Psalm 26:6

I will wash my hands in innocence. I will walk around your altar, O Jehovah.

Job 21:15

Who is the Almighty that we should serve him? And what do we gain if we pray to him?

Job 35:3

If you ask: 'What advantage do I have? How am I better off than if I had sinned?'

Job 9:27

If I say: 'I will forget my complaint, I will put off my sad face and wear a smile,

Job 9:31

Yet you will plunge me into the pit, and my own clothes will abhor me.

Psalm 24:4

He who has clean hands and a pure heart, who has not lifted up (turned) to falsehood and has not sworn deceitfully.

Psalm 51:10

Create in me a clean heart, O God, and renew a steadfast (dependable) spirit within me.

Malachi 3:14

You have said: 'There is no value to serve God. What is the use of doing what he says or of trying to show Jehovah of Hosts that we are sorry for what we have done?'

Hebrews 10:19-22

Having therefore, brothers, boldness to enter into the Holy Place by the blood of Jesus,

James 4:8

Draw close to God, and he will draw close to you. Cleanse your hands, you sinners; and purify your hearts, you double-minded (uncertain) (doubter) (skeptic).

Treasury of Scripture Knowledge

Summary

Verily I have cleansed my heart in vain, and washed my hands in innocency.

Bible References

Verily

Job 9:27
If I say: 'I will forget my complaint, I will put off my sad face and wear a smile,
Job 21:15
Who is the Almighty that we should serve him? And what do we gain if we pray to him?
Job 34:9
He has said: 'It profits one nothing to take delight in God.'
Job 35:3
If you ask: 'What advantage do I have? How am I better off than if I had sinned?'
Malachi 3:14
You have said: 'There is no value to serve God. What is the use of doing what he says or of trying to show Jehovah of Hosts that we are sorry for what we have done?'

Washed

Psalm 24:4
He who has clean hands and a pure heart, who has not lifted up (turned) to falsehood and has not sworn deceitfully.
Psalm 26:6
I will wash my hands in innocence. I will walk around your altar, O Jehovah.
Psalm 51:10
Create in me a clean heart, O God, and renew a steadfast (dependable) spirit within me.
Hebrews 10:19
Having therefore, brothers, boldness to enter into the Holy Place by the blood of Jesus,
James 4:8
Draw close to God, and he will draw close to you. Cleanse your hands, you sinners; and purify your hearts, you double-minded (uncertain) (doubter) (skeptic).

General references

Job 9:29
If I am condemned, why then do I labor in vain?
Job 34:8
Who goes in company with evildoers and walks with the wicked?
Psalm 94:19
When I worried about many things, your assuring words comforted me.
1 Corinthians 15:14
And if Christ has not been raised, then our preaching is worth nothing, and your faith is also without value.